显示虚拟环境
当我在 virtualenv 中并且它处于活动状态时，环境名称将显示在正常命令行提示符之前的括号中。它看起来像： (foo-env)User:~/Development/foo-env/foo$ 其中 foo-env 是环境的名称。我想知道是否有一种方法可以使命令行提示符显示类似于 (F)User:~/Development/foo-env/foo$ 的内容，而不是当前显示的 >(foo-env)。如果这是可能的，我将如何去做呢？
When I am in my virtualenv and it's active, the name of the environment appears in parentheses before the normal command line prompt. It looks like: (foo-env)User:~/Development/foo-env/foo$ where foo-env is the name of the environment. I was wondering if there was a way to make it that the command line prompt displayed something like (F)User:~/Development/foo-env/foo$ as opposed to the current display with (foo-env). If this is possible how would I go about doing this?
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所以我想出了如何做到这一点。在激活脚本中，
$PS1被重新定义以添加环境名称，在本例中是(foo-env)。为了在它前面添加您想要的任何内容，您必须进入您运行的activate脚本来激活virtualenv([yourenv]/bin/activate] ）。在那里，您将定义新$PS1的行从PS1="(`basename \"$VIRTUAL_ENV\"`)$PS1"更改为您想要的任何内容，这里PS1="(F)$PS1"。So I figured out how to do this. In the activate script the
$PS1is redefined to prepend the name of the env, in this case(foo-env). In order to prepend it with whatever you want you have to go into theactivatescript that you run to activate thevirtualenv([yourenv]/bin/activate]). There you change the line that that defines the new$PS1fromPS1="(`basename \"$VIRTUAL_ENV\"`)$PS1"to be whatever you want, herePS1="(F)$PS1".您需要设置 $PS1 环境变量来更改提示符。
查看 virtualenv 配置文件中的设置。
请参阅 http://www.cyberciti.biz/ Tips/howto-linux-unix-bash-shell-setup-prompt.html 了解如何根据需要进行设置。听起来您只需要将字符串
foo-env替换为F即可。You need to set the $PS1 environmental variable to change your prompt.
Take a look in the virtualenv config files for the setting.
See http://www.cyberciti.biz/tips/howto-linux-unix-bash-shell-setup-prompt.html for how to set it as you'd like. It sounds like you just need to replace the string
foo-envwithF.作为替代方案，请使用 pew （Python 环境包装器）。那么当您使用 virtualenv 时，您的
PS1就不会被破坏，并且您可以在.bashrc（等）中将您的PS1设置为通常，显示$VIRTUAL_ENV（如果已设置）。 我的的相关部分如下所示：As an alternative, use pew (Python Env Wrapper). Then your
PS1won't get mangled when you use a virtualenv, and you can set yourPS1in your.bashrc(etc.) as usual, displaying the$VIRTUAL_ENVif it's set. The relevant piece of mine looks like this: